Cable Test and Diagnostic System – PD, VLF CR, DAC
- Two proven voltage wave shapes in one device
- Standard compliant VLF cable testing with accompanying PD diagnosis
- Non-destructive PD diagnosis by means of proven DAC voltage
- 50 Hz Slope Technology for a direct comparison with the power frequency
Cable Test and Diagnostic System – PD, VLF CR, DAC
- Two proven voltage wave shapes in one device
- Standard compliant VLF cable testing with accompanying PD diagnosis
- Non-destructive PD diagnosis by means of proven DAC voltage
- 50 Hz Slope Technology for a direct comparison with the power frequency
Network operators can now get faster and significantly more reliable information about the quality and the condition of their cables. This is made possible thanks to the brand-new 50 Hz Slope Technology. For the first time, it has become possible to immediately locate faults in underground cables during the actual PD measurement.
With the 50 Hz Slope Technology for the first time, a withstand test with VLF cosine-rectangular voltage (VLF CR) and PD diagnosis with damped alternating voltage (DAC) is combined in one unit. This allows an efficient and integrated solution for precise inventory of the network infrastructure. The important fact here is that the PD measurement data, gained with the VLF CR or with the DAC test voltage, can be compared directly with the 50 / 60 Hz network voltage. This facilitates reliable decision making.
HV Cable Diagnostics…a Reality at Last!
…AVO NZ proudly delivers this long-sought capability
A Short, but Representative, ‘Perspective Piece’ on Industry Uptake of ‘Near 50 Hz’ PD Testing Internationally
Reference Papers
- Applied Voltage Frequency Dependence of Partial Discharges in Electrical Trees
- VLF-TE Messungen an betriebsgealterten Mittelspannungskabel
- Difference PDIV between 50Hz (or DAC) to VLF (0.1Hz)
- Excitation Voltages for Partial Discharge Diagnostics on Medium Voltage Distribution Cables
- Partial Discharge Measurements on service aged Medium Voltage cables at different frequencies
- Primerjava Meritve Delnih Razelektritev Na Srednjenapetostnih Xlpe Kablih Z Uporabo Različnih Alternativnih Napetostnih Virov